Parameter

Values

Description

CSTEVAL

<YES, NO>

Default = YES

This parameter controls whether to use wall time based cost evaluation to provide the optimal performance in running Lanczos steps.

The wall time based cost evaluation is a function of system performance, hence it could be influenced by the system load. Although it rarely happens, this influence could result in a different number of Lanczos steps, which could cause the resulting eigenvalues having a round off difference. In most cases, this small difference in solution is completely negligible for analysis. However, it can produce visible differences in optimization runs or in any solution that is sensitive to the small difference of the obtained eigenvalues and eigenvectors.

If YES, the wall time based cost evaluation is performed.

If NO, the wall time based cost evaluation is not performed.